A = L * W
A / L = W <==
when A = 42 and W = 16.8
A / L = W
42/16.8 = W
2.5 = W <=== width = 2.5 inches
On which one do you need help with?
The slope-point form of a line:

The slope-intercept form of a line:

1.

Substitute

2.

Substitute

3.

4.

Answer:
y = x-4
Step-by-step explanation:
you can put it in a calculator to be sure